Qualcomm Snapdragon 835 Advantages
Lower TDP (9W vs 15W)
MediaTek Dimensity 9400 Advantages
Better graphics card performance FLOPS (4.9521 TFLOPS vs 0.5675 TFLOPS )
Larger memory bandwidth (85.3GB/s vs 29.8GB/s)
Higher Frequency (3630MHz vs 2450MHz)
More modern manufacturing process (3nm vs 10nm)
Released 7 years and 11 months late